John Smith wrote:
Richard Harrison wrote:
Bill B wrote:
"What would be the optimum given a 15x15 inch square space?"

Terman`s 1955 opus on page 929 says:
"In particular, a loop antenna responds much less to the electric
induction field than does a simple wire antenna of comparable intercept
area. ...

Best regards, Richard Harrison, KB5WZI

Can't most of that be accounted for with the loops directional
properties? And, that is just another way of stating the importance of
the loops directional properties?

Regards,
JS

I think it's more an issue with being in the "near field" of the
interference source, and/or the interference source being in the near
field of the antenna. So the relationship between the E and H fields
isn't the free space 377 ohms. More of the energy of the interference
source might be in the H field than the E field, and the antenna may be
more sensitive to the E field than the H field, or vice versa.